Railway and tramway track



July 23, 1935. B. s. DAVIES ET AL RAILWAY AND TRAMWAY TRACK Filed Nov. 7, 1953 2 sheets sheet 1 INVENI'OHS BOB S. DAVIES PERCIVAL A. SUMMERS By k ATTORNEY July 23, 1935- B. s. DAVIES ET AL RAILWAY AND TRAMWAY TRACK 2 SheetS- -Sheet 2 Filed Nov. '7, 1935 INVENTORS ES BOB S- DAVI PERCIVAL A- SUMMERS By /&

ATTORNEY Patented July 23, 1935 UNITED STATES RAILWAY AND TRAMWAY TRACK I Bob Sydney Davies, HorsellRisey Woking; and

Percival Alexander land Summers, Osterlcy, Eng--- Application November 7, 1933', Serial- No. 697,041 In Great Britain December 6, 1932 7 Claims. (01. 238- 283) This invention relates to railway and tramway tracks and. has for its object to provide improvements in the means for securing rails in position whereby the transmission of shocks and vibrations of audible frequencies between the perma 7 the base of the rail and may be seated in or upon the sleeper or upon or below a rail clamping element carried by the sleeper. In addition, the upper surfaces of the rail flanges are also engaged by resilient pads carried by elements which serve to clamp the rail in position.

Reference will now be made to the accompanying drawings which illustrate by way of example several constructions according to the invention and in which:

Figure l is a sectional elevation and Figure 2 is a sectional plan respectively, showing applications of the invention to rail chairs of the kind employing'detachable clamping dogs,

Figures 3 and 4 are sectional elevation and plan respectively showing the application of the invention to chairs clamped to a steel sleeper and Figures 5 and 6 are sectional elevation and plan respectively showing another application of the invention to a steel sleeper.

In the application of the invention shown in Figures 1 and 2 a rail 9 is held in position by means of detachable clamping dogs h which engage the upper surfaces of the rail flanges 2'. The dogs h are held in position by bolts 7' which also serve to position the shock absorbing pad is disposed in a recess Z in the chair base m, the said pad lying below a lower rail clamping and supporting plate it upon which rests the base of the rail g. The pad 70 also serves as a cushioning means when a load is imposed on the rail and to cushion the rail when it returns to normal position. Additional shock absorbing pads o are dis posed between the upper surfaces of the rail flanges i and the clamping dogs h which are recessed as shown on their inner surfaces to retain said pads accurately in position.

In Figure 2, which shows a structure similar to that shown in Figure l, the rail and clamping elements are removed to show the pad Ic enclosed on all its edges by the walls of the chair base m.

The arrangements illustrated in Figures 1 and 2 may be modified as shown in Figures 3 and 4 wherein the rail clamping dogs are arrangedinthe same manner and are indicated by the same reference letters as in Figure 1 but the chair base m is eliminated in this construction and the pad it rests in a recess p formed in the uppersurface. of a steel sleeper q, the bolts 7' being replaced by bolts T which not only hold the clamping dogs h in position but pass through the pad 7c and sleeper q. -The outer ends ofthe clamping dogs are formed in both constructions with downwardlyprojecting bearing surfaces s which in the construction shown inFiguresB and 4 bear directly upon the upper surface of a lower clamping member or rail retaining and supporting plate. which is co-xtensiv with the shock absorbing pad k and is also positioned by the bolts 7.

In the construction shown in Figures 5 and 6, the application of the invention is shown to a steel sleeper it which is not recessed on its upper surface. Clamping dogs h of somewhat similar construction to those shown in Figures 1 and 3 are employed and the under surface of the rail rests upon a retaining plate '0 which is recessed on its upper and lower surfaces to accommodate the base of the rail 9 and the pad is respectively. The ends of this plate are recessed as shown at w to engage around the fixing bolts 7* which in this construction also pass through the clamping dogs h and the sleeper 1.0.

Below the pad is is a secondary clamping or retaining plate a: which is recessed on its upper surface to receive the base of the pad 70 and has apertures near its ends to engage around the bolts 1"; thus preventing lateral displacement of the pad 70 or of the plates which retain it from above and below.

The utilization of shock absorbing elements in the manner above described enables, in the cases where pads are disposed above and below the rail flange, the rail to be given a resilient shock absorbing suspension whilst in all cases described the passage of vibrations of audible frequency is damped and a degree of silence produced in the rolling stock not previously attained.

What is claimed is:

1. Means for securing railway'and tramway rails in position upon a sleeper comprising a rail supporting plate having a greater dimension than the width of the base flanges of the rail and recessed to receive and position the base flanges of the rail with said plate projecting laterally beyond the edges of the base flanges, a pad of sponge rubber disposed beneath said rail supporting platefor the entire width thereof, a pair of clamping dogs, pads of sponge rubber disposed on the under sides of said dogs to bear upon the upper surfaces of the base flanges of the rail, and means operative to adjustably lock the clamping dogs against the base flanges of the rail and the base flanges of the rail against the rail supporting plate.

2. Means for securing railway and tramway rails in position upon a sleeper comprising a pair of clamping dogs disposed to exert pressure upon the upper surfaces of the rail flanges and anchored to a supporting member, pads of sponge rubber carried by said dogs and disposed to bear upon said flanges, a floating rail support resiliently mounted on said supporting member and having means for positioning a rail laterally thereon, said support and resilient mounting being of an area to project laterally beyond the edges of said flanges andcapable of downward movement under pressure, and means cooperative with the laterally projecting portions of said support to limit lateral movement thereof and of a rail supported thereon.

3. Means for securing railway and tramway rails in position upon a sleeper comprising a plurality of sponge rubber pads disposed to support the rail flange from above and below, a rail supporting plate carried by one of said pads, said plate and lower pad being of an area to project laterally beyond the edges of the rail. base and said plate having means for positioning a rail laterally thereon, and locking means for retaining said'pads in operative position and cooperative with the laterally projecting portions of said plate to position it and a rail thereon laterally.

4. Means for securing railway and tramway rails in position upon a sleeper comprising a rail supporting plate adapted to receive the base of the rail and having portions to engage against the edges of the base flanges thereof, said plate being of an area to project laterally beyond the edges of the base flanges of the rail, a pad of sponge rubber disposed beneath said plate and substantially confined against lateral distortion, a pair -of adjustable clamping dogs, pads of sponge rubber disposed in the under surfaces of said dogs to bear upon the upper surfaces of the rail flanges, and bolts operative to lock said dogs in position and also cooperative with the laterally projecting portions of said plate to prevent lateral displacement thereof.

5. Means for securing railway and tramway rails in position upon a sleeper according to claim 1 including a chair on the sleeper having a recess in which the rail supporting plate is mounted and in which said plate has limited lateral movement.

6. Means for securing railway and tramway rails in position upon a sleeper according to claim 1, wherein the sleeper has a recess therein in which the rail supporting plate is mounted and in which said plate has limited lateral movement.

7. Means for securing railway and tramway rails in position upon a sleeper according to claim 4, wherein the rail supporting plate has recesses in the edges of its laterally projecting portions to engage said locking bolts to prevent lateral movement of said plate.

BOB SYDNEY DAVIES. PERCIVAL ALEXANDER SUMMERS. 

